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- // Copyright 2016 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "net/der/encode_values.h"
- #include "base/time/time.h"
- #include "net/der/parse_values.h"
- namespace net::der {
- namespace {
- bool WriteFourDigit(uint16_t value, uint8_t out[4]) {
- if (value >= 10000)
- return false;
- out[3] = '0' + (value % 10);
- value /= 10;
- out[2] = '0' + (value % 10);
- value /= 10;
- out[1] = '0' + (value % 10);
- value /= 10;
- out[0] = '0' + value;
- return true;
- }
- bool WriteTwoDigit(uint8_t value, uint8_t out[2]) {
- if (value >= 100)
- return false;
- out[0] = '0' + (value / 10);
- out[1] = '0' + (value % 10);
- return true;
- }
- } // namespace
- bool EncodeTimeAsGeneralizedTime(const base::Time& time,
- GeneralizedTime* generalized_time) {
- base::Time::Exploded exploded;
- time.UTCExplode(&exploded);
- if (!exploded.HasValidValues())
- return false;
- generalized_time->year = exploded.year;
- generalized_time->month = exploded.month;
- generalized_time->day = exploded.day_of_month;
- generalized_time->hours = exploded.hour;
- generalized_time->minutes = exploded.minute;
- generalized_time->seconds = exploded.second;
- return true;
- }
- bool GeneralizedTimeToTime(const der::GeneralizedTime& generalized,
- base::Time* result) {
- base::Time::Exploded exploded = {0};
- exploded.year = generalized.year;
- exploded.month = generalized.month;
- exploded.day_of_month = generalized.day;
- exploded.hour = generalized.hours;
- exploded.minute = generalized.minutes;
- exploded.second = generalized.seconds;
- if (base::Time::FromUTCExploded(exploded, result))
- return true;
- // Fail on obviously bad dates.
- if (!exploded.HasValidValues())
- return false;
- // TODO(mattm): consider consolidating this with
- // SaturatedTimeFromUTCExploded from cookie_util.cc
- if (static_cast<int>(generalized.year) > base::Time::kExplodedMaxYear) {
- *result = base::Time::Max();
- return true;
- }
- if (static_cast<int>(generalized.year) < base::Time::kExplodedMinYear) {
- *result = base::Time::Min();
- return true;
- }
- return false;
- }
- bool EncodeGeneralizedTime(const GeneralizedTime& time,
- uint8_t out[kGeneralizedTimeLength]) {
- if (!WriteFourDigit(time.year, out) || !WriteTwoDigit(time.month, out + 4) ||
- !WriteTwoDigit(time.day, out + 6) ||
- !WriteTwoDigit(time.hours, out + 8) ||
- !WriteTwoDigit(time.minutes, out + 10) ||
- !WriteTwoDigit(time.seconds, out + 12)) {
- return false;
- }
- out[14] = 'Z';
- return true;
- }
- bool EncodeUTCTime(const GeneralizedTime& time, uint8_t out[kUTCTimeLength]) {
- if (!time.InUTCTimeRange())
- return false;
- uint16_t year = time.year - 1900;
- if (year >= 100)
- year -= 100;
- if (!WriteTwoDigit(year, out) || !WriteTwoDigit(time.month, out + 2) ||
- !WriteTwoDigit(time.day, out + 4) ||
- !WriteTwoDigit(time.hours, out + 6) ||
- !WriteTwoDigit(time.minutes, out + 8) ||
- !WriteTwoDigit(time.seconds, out + 10)) {
- return false;
- }
- out[12] = 'Z';
- return true;
- }
- } // namespace net::der
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